Bottle cap sealing device



BOTTLE CAP SEALING DEVICE Filed May 22. 1931 mm ad wa nM. 1A n In 0 J Patented Dec. 26, 1933 UNITED srArss ATENT OFFI'AC BT'TLE CAB SEALI'NG DVICE` yJohn A. Martin, Indianapolis, Ind. y

, Application May 22, 1931. SerialNo. 539,296y l 6 Claims.

for consumption, and for retaining indenitely the carbonated condition of the bottled beverage.

I accomplish the above and other objects which will hereinafter appear, by the means illustrated in the accompanying drawing, in which- Fig. 1 shows the upper end of a bottle in side elevation` with my invention applied; Y Fig. 2 is a vertical section on the line 2-2, on

a larger scale;

Fig. 3 is an underside plan View of the packing disc shown in section in Fig. 2, removed from the cap and broken away in part; and

Fig. 4 is a viewsimilar to Fig. 2 showing the action of pressure on the `parts inthe carbonating operation.

Like characters of reference indicate like parts in the several views.

The bottle 4 is of any usual or convenient form and size with a neck having an outside bead 5. A sheet metal cap including a disc 6 with a downturned ilange 7, is adapted to fit over theneck outlet and the ilange crimped under the bead 5 in the usual manner of such closures.

The disc 6 has a ilatebottomed circular central depression formed by diepressure in the manufacture of the disc, andit has a small hole 8 at the center of the depression.

An externally threaded short tube 9 is secured with an airtight t, by soldering or other means in the depression. The bore of the tube is contracted toward the outer end of the tube thereby forming a seat for a ballv valve 10, assembled within the tube, upon a spring 11. The spring normally raises the ball into said seat. The ball makes a suiiiciently loose it in the major bore of the tube to allow gas under pressure to pass the ball when the ball `is forced down out of its seat.

A cap 12 has an internal thread by which the cap is screwed upon the tube 9, and the inner interior of the cap has a packing 13 making a gastight joint between the cap and outer end of the tube.

Seated Within the cap, against the disc 6, is a comparatively thick circular rubber disc seal 14, which has a series of small perforations 15, here shown as four in number, arranged in a circle around the center of the disc seal 14, but

(C1. eis-vs) suiiciently remote from the center to leave ample solid Vrubber between them to seal the hole 8 in the disc Gagainst outward pressurefrom within the bottle.

A dise of rubber lfhere shown'as much thin- 66 ner than the rubber disc seal-14, contacts the inner sideV of the disc 16.A It has a'circular concentric Vseries of very small lperforations 17, ina ci'r' cle of' much greater radius than the circle in which the perforations 15 are formed. 65

In the operation of my device as shown in Fig. 4, the cap 12 is removed and the tube 9 connected with a pump supplying carbonio acid gas (CO2) or with a tank containing that gas under suicient pressurepressure, pushes the ball valve 10 down out of its seat and passingA through the hole 8, separates the disc 14 from the disc 6. It then passes through the perforations 15 into contact with the rubber disc 16 and stretching the latter away from the.A disc 14 discharges into the bottle through the small perforations 17. As the rubber stretches the perforations are correspondingly enlarged by stretching until the gas passes through without further increasing the strain on S0 the rubber to dangerously stretch it.

n After the bottle is suiciently charged the pre-ssure of thel gas contained in it forces the disc 16 tightly against the disc 14 and forces both of them toward the metal disc 6, with the disc 14 35 tight against disc 6 to the positionof the two rubber discs as shown by dotted' lines in Fig. 2, which stretches both rubbers tightly against the circular depression at the center of disc 6, closing the openings 15, 17 and 18 effectively against 9G the escape of the` gas. In fact the thin rubber of disc 16 is forced by the gas pressure into the holes ,17, like plugs, to close the holes. The ball valve 10 is also seated' by its spring 11, as an additional precaution.

However, the escape of gas from thebottle is so effectively prevented by closures made by the rubber discs 14 and 16 that the ball valve 10 may be omitted, as also may thetube 9 and cap 12, the pump or storage tank supply tube being then provided with some other well known and suitable cap connections, not shown.

Having thus fully described my invention and the best embodiment thereof now known to me, what I claim as new and wish to secure by Letters Patent, is

1. In a closure for bottles, a cap having a metal disc with a hole therethrough, a disc seal of yielding material adapted to contact the inner side of the metal disc and having one or more The gas thus supplied under 705.3

perforations out of alinement with the perforation in the cap disc, and a second seal of yielding material much thinner and more elastic than the disc seal contacting the disc seal and having one or more perforations out of alnenent with the perforation or perforations in the disc seal.

2. In a closure for bottles, a cap having a metal disc Wit/han lannular lcentral depression and a hole in :the lbottom of the depression, a disc seal of rubber adapted to contact the inner side of the metal disc and having one or more perforations out of alinement with the hole in the cap disc, and a second seal of thinner rubber Contacting the disc seal and having -one -or :more perforations out of alinement With -the perforation or perforations in the disc seal.

3. In a closure for bottles, vaeap having-a metal disc With an annular central depression and a hole at the center of the depression, a disc seal of rubber adapted to :contact the inner side Aof the metal ydisc and vto be stretched Vacross the depression `and having a plurality of -perforations remote from the hole in the cap disc, and :a second seal Vof thinner rubber contacting the disc seal .and .having a plural-ity of jperforations remote ,fr-.om the perforationsin the .di-sc seal.

4. In .a closure forbottles, acap having a metal disc with an annular lcentral depression and a hole in the depression, .an externally threaded tube in the depression, a ball valve seated in the tube, a removable tube cap, a disc seal of rubber adapted to contact the inner side of the metal disc and to be stretched across the depression and having a plurality of perforations remote from the hole in the cap disc.

5. In a closure for bottles, a cap having a metal disc with an annular central depression and a hole Ein `the depression, :an externally threaded tube in the depression, a ball-valve seated in the tube, a removable tube cap, a disc seal of rubber adapted to contact the inner side of the metal :disc and to be stretched across the depression and having a plurality of perforations remote from the 'hole fin the cap disc, and a second seal of thinner rubber contacting the disc seal and having a plurality of perforations remote from the ',perforations in .thedisc seal.

6. In aclosure for bottles, a cap having a metal disc with a hole therethrough, a disc seal of rubber .held between the cap and bottle and adapted to `Contact the inner side of the metal disc and having lone or `more lperforations out Qf alignment with the hole in lthe -cap disc and a second disc thinner and more elastic than .the

disc seal held between the-disc -seal and the bottle and having more Land much smaller perforations than `the Adiscseal-out .of alignment Withthe perforatons 0f the 4disc seal.

.JOHN A.

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